Heat exchanger
OwnerYoshihisa Eto, Naoto Takayanagi +2inventors
InventorsYoshihisa Eto, Naoto Takayanagi, Shoji Akiyama, Muneo Sakurada
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Abstract
A heat exchange tube 4 is formed by using a sheet member not clad with a brazing material layer, with bonding margins 4d at which ends of the sheet member are overlapped and brazed by using a brazing material. This structure reduces the extent to which the brazing material becomes dispersed while the heat exchange tube is brazed and the likelihood of dissolution due to erosion, which makes it possible to assure the desired product quality such as corrosion resistance even when a tube material with a smaller wall thickness is used.
Claims16
1-6. (canceled)
A heat exchanger having:
- heat exchange tubes each formed by rolling sheet material;
- and
- a pair of tanks to which ends of said heat exchange tubes on two sides along the lengthwise direction inserted therein are bonded,
- wherein said heat exchange tubes are constituted with sheet material not clad with a brazing material layer;
- and
- wherein bonding margins at which sheet material ends are made to overlap are brazed by using a brazing material.
Dependencies are inferred from the claim text.